Results from an exploratory analysis of the Aboriginal and Torres Strait Islander mortality data are presented in this technical report. This report, based on available recorded data, is intended to inform and enhance future statistical reports. Due to differences between the States and Territories in the quality of death and population data for Aboriginal and Torres Strait Islander people, the approach adopted for this report is to report data for two regions. Jurisdictions in which ascertainment of Aboriginal and Torres Strait Islander status is thought to be relatively good (Western Australia, South Australia, Queensland and the Northern Territory) are called Region A in the report. Ascertainment of Aboriginal and Torres Strait Islander status is probably more complete in deaths data for Region A then for Region B (New South Wales, Victoria, the Australian Capital Territory and Tasmania).